| Autor: |
Van Cauter, Sofie, De Beule, Matthieu, Van Haver, Annemieke, Verdonk, Peter, Verhegghe, Benedict |
| Přispěvatelé: |
Tavares, João Manuel RS, Jorge, RM Natal |
| Jazyk: |
angličtina |
| Rok vydání: |
2011 |
| Předmět: |
|
| Zdroj: |
Proceedings of the III ECCOMAS thematic conference on computational vision and medical image processing : VipIMAGE 2011 |
| Popis: |
During conventional total knee arthroplasty, the shaft or medial axis of the femur (FSA) is referenced by inserting an intramedullary rod (FIR), which is then used to position the femoral prosthesis. In this study, an automated technique, based on geometrical entity fitting, is presented for extracting the FSA and FIR from a 3D triangular surface mesh. The algorithms are tested using computed tomography scans of 50 cadaveric femurs. Furthermore, reduced models are processed and compared to the full models to study the feasibility of partially scanning the thigh. The mean deviations for two outer parts of 25% and a central part of 5% of the femoral length are smaller than 1 mm for the FSA and 0.3° and 0.5 mm for the orientation and entry point of a 150 mm long FIR. The automated methods could offer a valuable assistance to the surgeon for preoperative planning of FIR insertion. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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